Catalyst for selective hydrogenation of acetylene compounds in 1,3-butadiene, method for producing the same and method of using the same
An alkyne compound, selective hydrogenation technology, applied in metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problem of lack of selectivity
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Embodiment 1
[0037] Add 18.3ml of palladium chloride solution (120g / L) into 1200ml of pure water, add 1000g of alumina carrier therein, leave it for 90 minutes, remove the solution, reduce it with 5% sodium formate solution at 60°C, wash it with water, Dry in air to obtain a Pd catalyst. On the other hand, 4.3 g of bismuth nitrate was completely dissolved in a solution obtained by adding 15 ml of concentrated nitric acid to 165 ml of pure water, and this solution was added to a Pd catalyst (300 g), followed by firing at 500°C. After calcining, the catalyst was obtained by reduction in hydrogen at 350°C. The composition ratio of this catalyst was Pd / Bi=0.2% / 0.6%.
[0038] The catalyst was measured with an XRD measuring device. Copper was used for the cathode, and the measurement was performed at an output of 40 mA and 45 kV at a wavelength of 1.54 angstroms. The results are shown in Fig. 1(a). There is a peak around 2θ=28°, which is not seen in FIG. 1(b) showing the peak of the catalyst...
Embodiment 2
[0040] The Pd catalyst was obtained by the same method as in Example 1. On the other hand, 2.9 g of bismuth nitrate was completely dissolved in a solution obtained by adding 10 ml of concentrated nitric acid to 170 ml of pure water. After adding this solution to a Pd catalyst (300 g), it baked at 500 degreeC. After firing, it is reduced in hydrogen at 350°C to obtain a catalyst. The composition ratio of this catalyst was Pd / Bi=0.2% / 0.4%.
Embodiment 3
[0042] The Pd catalyst was obtained by the same method as in Example 1. On the other hand, 5.6 g of bismuth nitrate was completely dissolved in a solution obtained by adding 20 ml of concentrated nitric acid to 160 ml of pure water. After adding this solution to a Pd catalyst (300 g), it baked at 500 degreeC. After firing, it is reduced in hydrogen at 350°C to obtain a catalyst. The composition ratio of this catalyst was Pd / Bi=0.2% / 0.8%.
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